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PAG 3: Electrical Characteristics

Investigate the electrical characteristics of components (resistors, filament lamps, thermistors, diodes)

Required PracticalOCRA-Level

🔬 Equipment Required

  • Various components (resistor, lamp, thermistor, diode)
  • Variable power supply
  • Ammeter
  • Voltmeter
  • Variable resistor (potential divider)
  • Connecting wires
  • Component holders

🦺 Safety Precautions

  • Filament lamp gets hot
  • Use appropriate voltage for diode
  • Avoid excessive current
  • Allow components to cool

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About PAG 3: Electrical Characteristics

PAG 3: Electrical Characteristics is a required practical for OCR A-Level Physics. This practical investigate the electrical characteristics of components (resistors, filament lamps, thermistors, diodes)

Students are expected to understand the method, identify and control variables, use appropriate equipment, analyse results, draw graphs, identify sources of error, suggest improvements, and consider safety precautions.

Questions on required practicals frequently appear in OCR A-Level Physics exams and can be worth significant marks. Practice with our AI-generated questions to master this practical.

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